Kai is talented but adrift, spending his days sulking in a small fishing village after his family moves from Tokyo.
Lu Over the Wall is directed by Masaaki Yuasa and animated by Science Saru, and the English language version features the voice talents of Michael Sinterniklaas (Your Name, Teenage Mutant Ninja Turtles) and Stephanie Sheh (Your Name, Sailor Moon Crystal).
As Kai spends more time with Lu, he finds he is able to tell her what he is really thinking, and a bond begins to form.